Not every air conditioning problem is an emergency, and knowing which ones are saves money in both directions. Calling for emergency service on a problem that could have waited costs the after-hours rate for no reason, but waiting on a problem that could not costs a compressor, a ceiling, or, in a Columbia heat wave, someone’s health. This post sorts air conditioning problems into the ones that need a call right away, the ones that need a call this week, and the ones that can wait for a scheduled visit.
Burning smells and electrical signs
A burning smell, a smell of hot plastic, or smoke from any part of the system means you shut it off at the breaker and call. So does a breaker that trips again after you reset it, since it is protecting a circuit with a fault on it. Buzzing or sizzling from the outdoor unit or the air handler, scorch marks near the disconnect box or the unit, and lights that dim when the system starts all fall into the same category. Electrical faults in this equipment are a fire risk, and running the system another day does not improve them.
Refrigerant leaks
A hissing or bubbling sound near the refrigerant lines, oily residue on the lines or around the outdoor unit, or ice forming on the lines during a hot day point to refrigerant escaping the system. Refrigerant should not be breathed in a closed space, and a system running low on it will destroy its compressor, the most expensive part in the system. Turn the system off and schedule the repair. Continuing to run it turns a leak repair into a compressor replacement.
Water where it can do damage
Water dripping through a ceiling below an attic air handler, water spreading across a floor from a closet unit, or a drain pan that is overflowing is an emergency for the house rather than the equipment. The system itself may need only a cleared drain line, but every hour the water runs, the ceiling, the drywall, and the flooring absorb it, and in Columbia’s humidity, mold follows within days. Shut the system off at the thermostat, put a container under the drip if you can, and call. A float switch, added during the repair if the system does not have one, prevents the next occurrence.
No cooling in extreme heat
A system that has stopped cooling on a mild day is a problem for this week. The same failure when the heat index is over 100 is an emergency, because a closed Columbia house without cooling climbs into the upper 80s within hours and keeps going. For infants, older adults, pregnant women, and anyone with a heart or breathing condition, that is a medical risk, not a discomfort. If someone in the house is in one of those groups and the cooling has failed in extreme heat, call for same-day service and, while you wait, move to the coolest room, close blinds, run fans, drink water, and consider whether a neighbor, a relative, or a public building with air conditioning is the better place to spend the afternoon.
Ice and loud mechanical noises
Ice on the indoor coil or the refrigerant lines means the system should be turned off immediately, both to let it thaw and because running an iced system sends liquid refrigerant into the compressor and can ruin it. The call itself can be scheduled for the same day rather than the same hour, but the shutoff cannot wait. Grinding, banging, or screeching from either unit means a motor or a fan is failing in a way that will damage whatever is around it, and the system should be off until a technician has seen it.
Call this week
Some problems are not emergencies but should not wait for the next convenient month.
- Air at the vents that is cool instead of cold on a normal day.
- A system that runs far longer than it used to.
- A musty smell when it starts.
- The outdoor unit humming without the fan turning, which is a capacitor about to take the compressor with it.
- Water in the drain pan that has not yet overflowed.
Each of these is a small repair now and a larger one in a few weeks, and each is a standard air conditioning repair at a scheduled rate.
Schedule it normally
A bedroom that is a couple of degrees warmer than the rest of the house, a power bill that has crept up, a thermostat that seems to read a degree off, or a filter you cannot remember changing are all reasons to book a maintenance visit, not an emergency call. They are also the early forms of most problems above, which is the argument for a maintenance plan that catches them in spring.
What to do while you wait
Once you have called, a few steps protect the equipment and the house. If you smelled anything electrical, saw ice, or heard grinding, leave the system off. If the problem is water, keep the system off and keep the area under the leak clear. If the problem is no cooling and the system is otherwise running normally, leave it on, but do not lower the thermostat to force it; the system cools at one rate regardless. Close blinds, avoid the oven and dryer, and run ceiling fans.
Same-day emergency service in Columbia
2nd Wind Heating & Air Conditioning provides same-day emergency service for air conditioning failures. Same-day emergency service applies to residential properties only. Call, schedule online, or use the 24/7 chat on our website, and a trained technician will diagnose the problem, show you the failed part on video, and give you the repair options with prices before any work begins. Members of the Cloud 10 Membership receive priority scheduling and pay a reduced after-hours diagnostic fee of $75 rather than $149.